enum trial in france sophie coste-martinez
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ENUM Trial in France Sophie Coste-Martinez. Outline. ENUM in France Expectations Numerobis ENUM administration Functional model Service requirements and constraints DNS analysis Trial steps Conclusion. ENUM in France. - PowerPoint PPT PresentationTRANSCRIPT
ETSI Plugtest – ENUM Workshop - S1 - 24/02/2004
ENUM Trial in France
Sophie Coste-Martinez
ETSI Plugtest ENUM Workshop - S2 - 24/02/2004
Outline
ENUM in France Expectations Numerobis ENUM administration Functional model Service requirements and constraints DNS analysis Trial steps Conclusion
ETSI Plugtest ENUM Workshop - S3 - 24/02/2004
ENUM in France
May 2001: public consultation initiated by the the National Regulation Authority
June 2001: creation of a national working group on ENUM
February 2002: call for a trial project
March 2002: project proposal
May 2002: proposal accepted ￫ Numerobis
February 2003: start of Numerobis project
Numerobis project is running until September 2004
ETSI Plugtest ENUM Workshop - S4 - 24/02/2004
Expectations
Numerobis main objectives:
To develop an administration model for ENUM in France
To open the model for services provision by ASPs
To identify services requirements and constraints
To take into account Number Portability
To explore different choices of DNS-related techniques
To implement an ENUM platform in order to validate the defined model
ETSI Plugtest ENUM Workshop - S5 - 24/02/2004
Numerobis (characteristics)
A RNRT project (French National Network for Research in Telecommunications)
Different categories of partners: University (INT) TSPs (fixed: FT and mobile: SFR, Orange) ccTLD Registry: AFNIC (.fr)
ENUM technology orientedExperimentation but no commercial offerAdvanced analysis on DNS-related techniques
Keeping a close eye on the trends of standardization
Trial uses 3.3.e164.arpa and reserved numbering blocks
ETSI Plugtest ENUM Workshop - S6 - 24/02/2004
Common agreement (ENUM national WG)
ENUM domain names administration should be mapped on E.164 numbers administration
No ENUM Domain names commercialization
Competition regards services provision
Tier2 is the entity who has contracted with the end user for the telephone subscription
TSPs or mandated third entities handle the ENUM domain names database
Guaranties Consistency with the numbering plan
No need for a validation entity (validation is internal and simple)
ENUM administration (issues)
ETSI Plugtest ENUM Workshop - S7 - 24/02/2004
ENUM administration
e164.arpaTier 0: root (ENUM reference)
Technical Manager
Tier 2: Complete number
TSP
ProfilesProfiles
0ProfilesProfiles
…
Profiles
Tier 1: CC authority 3.3.
France
?Technical Manager
Service Provider A
Service Provider B
ASPs…
End users
ETSI Plugtest ENUM Workshop - S8 - 24/02/2004
Tier2Technical Manager
Tier2Administrative
Manager
...B.A.Z.
U.D.C.M.Q.P.B.A.Z.
Tier2Technical Manager
Tier2Administrative
Manager
...B.A.Z.
U.D.C.M.Q.P.B.A.Z.
Functional Model
ASP
End user
Interfaces :
International interface Delegation and Management Administrative, commercial Technical (NAPTR update)
Administrative (Portability) Technical (NAPTR update)
Database : national numbering plan allocation
Tier1Technical Manager
Tier1Administrative
Manager
Tier0Technical Manager
Tier0Administrative
Manager
e164.arpa.
3.3.
New Tier2Administrative
Manager
Case of portability
New Tier2Technical Manager
New Tier2Administrative
Manager
Case of portability
New Tier2Technical Manager
ETSI Plugtest ENUM Workshop - S9 - 24/02/2004
Services: requirements and constraints (1/2)
Objective To identify a representative services panel
To derive these services' requirements
Benchmark servicesConversational services
Messaging: email, SMS, MMS
Web
Streaming
Directory services
ConstraintsLoad supported by DNS servers Delay caused by DNS interrogationZone updatesAvailability….
ETSI Plugtest ENUM Workshop - S10 - 24/02/2004
Services: requirements and constraints (2/2)
Service case
messagemessag
VoIP service provider1
4
Resolver
2
3
7
5
MSC
HLR VLR
IPGSMGW
6
VoIP to GSM Call
DNSENUM
Supported load ~325 r/s
Delay for data
Update
5 s
Response time <= 140 ms
Availability of
DNS servers
99.999%
Related constraints
Internet
ETSI Plugtest ENUM Workshop - S11 - 24/02/2004
DNS analysis
User ENUM = public DNS on the Internet
Issues regarding privacy: no confidentiality, spam,…
Serious concerns for different constraintsSolutions may reside in services
DNSsec :
A solution for authentication and data integrity, but not for confidentiality
Increase time for data updating, responses
Impact on data organization
Implementations are still non mature
Still thinking about its potential use in ENUM
ETSI Plugtest ENUM Workshop - S12 - 24/02/2004
Trial steps Current
DNS infrastructure recommendations for Tier1 and Tier2 entities Domain Name Servers being setup ENUM resolver design Enumservices used: E2U+sip, E2U+h323…
Next steps
ENUM resolver implementation Administrative procedures Architecture validation DNS simulator
ETSI Plugtest ENUM Workshop - S13 - 24/02/2004
Conclusion
Numerobis project added values:
An experience on ENUM technology Guidelines for future ENUM administration and implementation in France Contribution to standards
More info : http://www.numerobis.prd.fr/